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iPhone 3G battery draining too fast? Try this
The iPhone 3G has been shown to exhibit poorer battery life than its predecessor when persistently utilizing 3G connectivity. However, some have reported inordinately short battery life, which could have a variety of causes including:
- faulty battery indicator
- overactive Push mechanism
- application flaws
- hardware defects
If you think you're suffering from unusually short battery life, try the following procedures:
Turn off Push The iPhone 3G's Push functionality for Exchange and Mobile Me accounts can destroy battery life. Turn this option off in "Settings" and compare your new battery life to the old.
Force-quit applications If an application quits unexpectedly and you notice poor battery life afterward, relaunch the application then force-quit it by holding down the home button for several seconds. This can eliminate problematic or hung processes that might be draining the battery.
Reset iPhone In some cases, simply resetting the iPhone can resolve signal strength issues. Hold down the home and sleep buttons simultaneously until you see the white Apple logo, indicating that your iPhone has restarted.
This procedure can right a faulty battery indicator and eliminate applications that have hung or are otherwise improperly chewing battery.
Reset network settings Tap Settings, tap General, tap Reset, tap Reset Network Settings. This will cause your iPhone to restart, and will delete any stored Wi-Fi passwords as well as DNS settings and more. It can resolve signal strength issues in some cases.
Failing the above, peruse our special report on increasing battery life for first-generation iPhones -- many of the same fixes may be applicable.
I'll spare you the gory details and cut to the chase. Out of the box, my iPhone 3G had software version 2.0, rev 5A345, but found out that rev 5A347 was the current release. Clicking "update" in iTunes did nothing - "you've got the current version" message.
Not sure where it is on PC, but in Mac the iphone software is stored under Library/iTunes/iPhone Software Updates. If you dump the contents of that folder and then click "update", iTunes will be forced to download the latest revision from Apple's Servers.
Using this method to re-flash my iPhone 3G DRAMATICALLY increased battery life. Turning off 3G when I don't NEED the high-speed data increased battery life even further. With these two simple changes, I went from 1.5hrs use/4.5 hrs standby all the way to 10.5hrs use/18 hrs standby and still didn't reach low-battery warning (as before the change, most use was music with the screen off). If I need or want the high-speed data, it's easy enough to go in and turn 3G back on.
If you're suffering from inordinately short battery life with the iPhone 3G, check your firmware revision (Settings -> General -> About). If you don't have 2.0 (5A347) or later, then you may want to try ugrading.
I have had to turn off ALL push options for mail and calendar. I also turned off all location services.
Check the In Use time on your phone. If the phone thinks it has been in use for 8 hours since your last charge, then the push mail is probably keeping the phone "in use" draining he battery.
The link is: www.WirelessInput.com
The batter life went down to 2 hours after 2.1 update. Adding an additional smtp/imap email account to my iPhone stopped the exchange sync account from initializing the 3G connection to sync with exchange. This worked perfectly with exchange only before 2.1 update (work hone).
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1) Switch off 3G.
I live in Japan where 3G is the ONLY network available. If I switch it off I would have an iPod rather than an iPhone (an iPod with a 2 year min contract of at least 50 USD a month!)
2) Switch off Push mail.
I use my phone for business and push mail is essential to me (through Exchange server). No problems with Blackberry, no problems with Palm, no problems with HTC Windows mobile phone but iPhone, well, probably to trendy to be used for business.
I am really disappointed with the fact that all professional reviewers just boast the infinite number of applications rather than focussing on the main unresolved problem of this mobile telephone. I don?t understand how is it that Apple does not get it that Steve Jobs can fully use his phone 1/3 of the time Bill Gate could with a HTC Touch with WM6?not only, Bill could also add a spare battery?.or 2?or 3?.
As far as I am concerned I took out the usim card, gave it to my little cousin to use as an iPod and I went back in less than a week to my HTC Touch HD with WM6.1?works for 2 days in a row with push mail and all the other perks.
- by albertmwhui August 2, 2009 6:24 PM PDT
- The battery life of my iPhone 3G is automatically consumed very fast, it is decreased from 4 days (standby) to 5 hours (standby) after update of OS version 3.0. In accordance with the tips of improvement of battery life, turn off the features of iPhone, it is incredible to an advance cell phone. The problems are come from iPhone?s version 3.0 or later, the infrastructural design of iPhone, no warning advice before update version. If the users accept the tips, then iPhone will advice you to turn off the iPhone when later version is updated. It is a crazy illogical advice.
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